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Cover plate containing kraft paper

A technology of kraft paper and cover plate, which is applied in the manufacture of paper/cardboard layered products, electrical components, and printed circuits. It can solve the problems of high needle breakage rate and residual glue on the hole wall, and achieve excellent antibacterial and flame retardant properties. , Excellent leveling effect, good salt spray resistance

Pending Publication Date: 2019-05-03
广东中晨电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a cover plate containing kraft paper. The cover plate of the present invention can effectively solve the problems of more residual glue on the hole wall and a higher rate of broken needles when PCB is drilled.

Method used

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  • Cover plate containing kraft paper
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Examples

Experimental program
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Effect test

Embodiment 1

[0024] This embodiment provides a cover plate containing kraft paper. The cover plate includes: a kraft paper layer 1 , a cooling layer 2 and an anti-splash layer 3 from top to bottom.

[0025] The cover plate containing kraft paper provided by the present invention, through the organic cooperation of the kraft paper layer 1 and the cooling layer 2, minimizes the residual glue on the drill bit and the hole wall, protects the drill bit, reduces the wear of the drill bit and reduces the broken needle rate. ; and the anti-drilling layer 3 (that is, one layer in contact with the substrate to be drilled) adopts a polymer resin layer or an aluminum foil, and its hardness and compactness are close to the substrate to be drilled, which can effectively prevent the occurrence of stress on the drill needle. In case of sudden change, the rate of broken needles is reduced, and it also has a certain preventive effect on the burrs on the orifice.

[0026] Further, in the present invention, t...

Embodiment 2

[0033] This embodiment provides a cover plate containing kraft paper. The cover plate includes: a kraft paper layer 1 , a cooling layer 2 and an anti-splash layer 3 from top to bottom.

[0034] The cover plate containing kraft paper provided by the present invention, through the organic cooperation of the kraft paper layer 1 and the cooling layer 2, minimizes the residual glue on the drill bit and the hole wall, protects the drill bit, reduces the wear of the drill bit and reduces the broken needle rate. ; and the anti-drilling layer 3 (that is, one layer in contact with the substrate to be drilled) adopts a polymer resin layer or an aluminum foil, and its hardness and compactness are close to the substrate to be drilled, which can effectively prevent the occurrence of stress on the drill needle. In case of sudden change, the rate of broken needles is reduced, and it also has a certain preventive effect on the burrs on the orifice.

[0035] Further, in the present invention, t...

Embodiment 3

[0041] This embodiment provides a cover plate containing kraft paper. The cover plate includes: a kraft paper layer 1 , a cooling layer 2 and an anti-splash layer 3 from top to bottom.

[0042] The cover plate containing kraft paper provided by the present invention, through the organic cooperation of the kraft paper layer 1 and the cooling layer 2, minimizes the residual glue on the drill bit and the hole wall, protects the drill bit, reduces the wear of the drill bit and reduces the broken needle rate. ; and the anti-drilling layer 3 (that is, one layer in contact with the substrate to be drilled) adopts a polymer resin layer or an aluminum foil, and its hardness and compactness are close to the substrate to be drilled, which can effectively prevent the occurrence of stress on the drill needle. In case of sudden change, the rate of broken needles is reduced, and it also has a certain preventive effect on the burrs on the orifice.

[0043] Further, in the present invention, t...

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Abstract

The present invention provides a cover plate containing kraft paper. The cover plate is characterized in that the cover plate sequentially comprises a kraft paper layer, a cooling layer and an anti-flashing layer from top to bottom; the cooling layer is a composite resin layer; and the anti-flashing layer is an aluminum foil. The cover plate of the invention can effectively solve the problems of much glue residual on hole walls and high broken needle rate in PCB perforation.

Description

technical field [0001] The invention relates to the technical field of pcb drilling cover plates, in particular to a cover plate containing kraft paper. Background technique [0002] Printed circuit board, also known as PCB circuit board, is a printed circuit board that forms point-to-point connections and printed components on a common substrate according to a predetermined design. Printed circuit boards are indispensable accessories in modern electronic equipment. It is widely used in communication , digital products, instruments, medical equipment, aerospace and military industries and other fields. With the development of electronic technology, PCB is developing in the direction of multilayer, thinning, high density and high speed. Drilling is an important process in the PCB manufacturing process. The so-called drilling is to drill the required via holes on the copper clad laminate. The processing cost usually accounts for 30-40% of the PCB manufacturing cost. When p...

Claims

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Application Information

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IPC IPC(8): B32B29/00B32B27/10B32B27/28B32B27/40B32B15/20B32B15/08B32B15/095B32B33/00H05K3/00
Inventor 邹向东
Owner 广东中晨电子科技有限公司
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